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ISL9120 Datasheet(PDF) 2 Page - Renesas Technology Corp

Part No. ISL9120
Description  Compact High Efficiency Low Power Buck-Boost Regulator
Download  13 Pages
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Maker  RENESAS [Renesas Technology Corp]
Homepage  http://www.renesas.com
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ISL9120 Datasheet(HTML) 2 Page - Renesas Technology Corp

 
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ISL9120
FN8659 Rev.2.00
Page 2 of 13
May 23, 2017
Block Diagram
Pin Configuration
ISL9120
9 BUMP WLCSP
BOTTOM VIEW
FIGURE 3. BLOCK DIAGRAM
VOLTAGE
COMPARATOR
VIN
PFM CONTROL
PVIN
MONITOR
LX1
VREF
VREF
VOUT
A2
A1
C1
LX2
GATE DRIVERS
AT ANTI-
SHOOT THRU
THERMAL
SHUTDOWN
CURRENT
DETECT
C2
B2
C3 FB
PGND
B3
GND
EN
EN
EN
VOUT
CLAMP
VOLTAGE
PROG.
EN
SOFT
DISCHARGE
B1
ILIM
CURRENT
COMPARATOR
A3
BYPS
+
+
+
-
-
B
A
C
LX2
VOUT
FB
PGND
EN
GND
LX1
VIN
BYP
123
Pin Descriptions
PIN #
PIN NAMES
DESCRIPTION
C1
LX2
Inductor connection, output side.
C2
VOUT
Buck-boost output. Connect a 22µF or 47µF
capacitor to PGND.
C3
FB
Voltage feedback pin, connect directly to
VOUT pin for fixed output version.
B1
PGND
Power ground for high switching current.
B2
EN
Logic input, drive HIGH to enable device. Do
not leave floating.
B3
GND
Analog ground pin.
A1
LX1
Inductor connection, input side.
A2
VIN
Power supply input. Range: 1.8V to 5.5V.
Connect a 10µF capacitor to PGND.
A3
BYP
Forced bypass mode enable pin. Logic high
for forced bypass mode operation. Logic
low for buck-boost mode operation. Do not
leave floating.


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